CHLORPICRIN PLANT AT EDGEWOOD ARSENAL.
Bleaching powder, lime, and picric acid are received by rail. In the mixers appearing in the right foreground lime, picric acid, and water are mixed to form a solution of calcium picric, and bleach and water are mixed to form a cream. These solutions are pumped together into any of the several stills, where they react to form chlorpicrin. This plant was rated at 12½ tons of chlorpicrin a day, but reached a production as high as 31 tons on one day.
MIXER BUILDING OF PHOSGENE PLANT AT EDGEWOOD ARSENAL.
The capacity of this building is 20 tons of liquid phosgene per day. Dry 98 per cent gaseous chlorine, as obtained directly from the cells of the chlorine plant, and pure carbon monoxide obtained from the producers, are mixed in approximate equal volumes and the mixture passed through catalyzers, where the two gases combine to form phosgene. The resultant gas is liquefied in the condensers, appearing in the left.
CHLORINE PLANT, EDGEWOOD ARSENAL.
One of eight cell rooms, capacity 12½ tons gaseous chlorine per day. Each cell room consists of six circuits—74 cells per circuit, or a total of 444 cells per room.
